Cathode stripping, how would you know it's happening? Then only if the B+ is high, say if you are using 211 triodes or somesuch why is it an issue? Also the power trans. needs to be a little beefier with tube rec. that shouldn't be too difficult. I'm just playing devils advocate here but in the case of the surge circuit wouldn't you want all switches and/or relays out of the circuit if at all possible? Thanks again, J.R.( The KT88 amp looks nice but too powerful, whatever happened to that nice PP 2a3 amp J. Eckland built? When are we going to hear from Natalie Stone again, does she know she has a fan club? Motorcycles and Altec 287 amps; There _is_ a God!)